Unveiled today were two interesting pieces of keyring merchandise, which will be availible in Japan towards the end of the year.
Phantom Hourglass Sound Drops

Similar to the Mario sound drops released a few months back, when pressed, these keyrings make noises from Phantom Hourglass. Ideal for winding up your friends, or pretending you’re Link!
Wii Remote Projector

Not entirely a Zelda product, these Wii remote keyrings display an image of a Wii game character onto a darkened wall. They do not, unfortunately, summon Nintendo characters to your aid when shone into the sky. There are eight in all, and characters from Twilight Princess, Super Paper Mario, Wario Ware: Smooth Moves, and Fire Emblem: Radiant Dawn are included in the set, two from each game. The two Zelda-themed remotes include images of Link, and Midna atop Wolf Link.
These wacky keyrings are currently only availible to pre-order in full sets at specialist site National Console Support, but will probably be more widely availible, and availible separately, towards the end of the year, when the December release approaches.